Roof ventilator



March 26, 1963 R. o. PEASE ROOF VENTILATOR 2 Sheets-Sheet 1 Filed March 16, 1960 m m m m P/CH/IRD 0. PEI-15E awk/1Z5 ATTORNEYS March 26, 1963 R. o. PEASE ROOF VENTILATOR 2 Sheets-Sheet 2 Filed March 16, 1960 INVENTOR EMA/02D 0. PEASE BY ATTORNEYS United States Patent "ice 3,082,677 ROOF VENTILATOR Richard 0. Pease, Redwood City, Calif., assignor to Dura- Vent Corporation, a corporation of Delaware iled Mar. 16, 1960, Ser. No. 15,406

1 Claim. (CI. 98-46) This invention relates to a roof vent structure and more particularly to an adjustable roof vent which can be used on roofs having various pitches.

As is well known, roofs are commonly made with different pitches, ranging from roofs which are flat to those having a high pitch. When a pipe passes through such a roof, it is necessary to employ some form of sealing. It is impractical to provide flashing and pipe combinations to fit every angle which might be encountered and it is highly undesirable to employ a structure requiring cementing or similar sealing means.

It is an object of the present invention to provide a roof vent structure which is adapted for placement on roofs of Various angles and which will provide a substantially gas-tight vent and which will not permit water to enter the building.

Another object of this invention is to provide an adjustable vent assembly which can be easily adjusted to any desired angle and locked in place without the use of tools.

Other objects will be apparent from the balance of the specification which follows.

In the drawings forming a part of this application:

FIGURE 1 is a side elevation view, partly in section of a vent structure made in accordance with the present invention;

FIGURE 2 is an enlarged sectional view showing in detail the locking assembly;

FIGURE 3 is a partial view of the structure shown in FIGURE 1 showing its use on a steep roof;

FIGURE 4 is a section on the lines 4-4 of FIG- URE 3.

Referring now to the drawings of reference characters, there is shown a base plate or flashing 6 having a substantial circular opening 8 therein. Fastened to the base plate 6 is a sleeve 10 which is in the form of an oblique truncated circular cone. The top edge 12 of the truncated cone is substantially normal to the axis of the cone while the bottom edge which is joined to the flashing 6 forms an acute angle therewith. The sleeve 10 may be fastened to the flashing 6 by any convenient means such as welding or soldering, but is preferably fastened by a rolled seam 14 as is conventional in the sheet metal art.

An upper pipe 16 is provided which may be cylindrical, but which is preferably tapered slightly as is shown. The pipe 16 fits over the sleeve 10 as is shown and will form a substantially gas-tight seal therewith through a wide range of angles extending from that shown in dash lines in FIGURE 1 to that shown in FIGURE 3. In all positions the joint will be water tight. Although a section through a circular cone forms a perfect circle only when the section is taken on a plane normal to the axis of the cone, a condition which would only be met when the pipe 16 axis coincides with that of the cone, pipe 16 has suflicient flexibility that it can easily distort to the 3,082,677 Patented Mar. 26, 1963 slightly elliptical shape necessary to conform to the sleeve 10 through a wide angular range.

The pipe 16 is preferably surmounted by a vent cap 18 which can be of any desired configuration and attached in conventional manner.

In order to provide a positive locking means whereby the pipe 16 can be locked to the sleeve 10 in any desired position, a plurality, preferably three, of locking members are provided. These take the form of metal straps 20, each of which is fastened by a single bolt or rivet as at 22 to the sleeve 10; since the straps are fastened only at a single point, they can pivot around this point. The upper portion of the strap 20 is bifurcated as at 24 forming two tongues 26 and 28. The pipe 16 is provided with corresponding threaded members 30 extending therefrom a short distance from the bottom of the pipe 16. The shaft of each of the threaded members 30 extends through the opening 24. Mounted over the threaded member 30 is a clip 32 having flanges 34 and 36 extending on each side of the tongues 26 and 28. A winged nut 38 is then employed to clamp the assembly together.

In assembling the device, it is only necessary to loosen the three wing nuts 38 and adjust the pipe 16 to the desired angle. The three wing nuts 38 are then turned down and will hold the pipe in a fixed position. Nevertheless, the assembly can be readily taken apart for cleaning, repair, or reuse at any time.

I claim:

A roof ventilator structure comprising a flashing having an opening therein, a sleeve having the shape of an oblique truncated circular cone secured to said flashing, a tapered flexible pipe over the upper portion of said sleeve and extending upwardly therefrom and being tiltable over a substantial angle while maintaining a water shedding connection with said sleeve, said pipe being free to slip over said sleeve in a plurality of positions and being restrained only by the increased diameter of the sleeve as the pipe is pushed downwardly thereon, and means for anchoring said pipe to a desired angle with respect to said sleeve, said means comprising a plurality of upwardly extending straps connected to said sleeve, said straps being pivotally connected to said sleeve at points below the contact line of the sleeve and the pipe, said straps being bifurcated at their upper ends of form two tongues, a plurality of corresponding outstanding threaded members attached to said pipe, one of said threaded members extending between each pair of tongues, and a wing nut on said threaded member whereby said tongues can be clamped against the pipe.

References Cited in the file of this patent UNITED STATES PATENTS FOREIGN PATENTS Germany Jan. 17, 

